Inventor
Makoto Sekijima
Inventor
Tokyo, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus67%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
PatentTitleYear
7,403,716'Optical module for bi-directional communication system'20087,125,174'Optical module for bi-directional communication system'20065,841,922'Optical fiber terminal with optical isolator and semiconductor laser module using the same'19985,691,845'Optical isolator, optical isolator with fiber and method for making the same'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2008Patents assigned to TDK CORP (4)· patent assignee history
1997Based in Ichikawa, JP· patent location history
1998–2008Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TDK CORP | 4 | 1997–2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 3 | 1998–2008 |
| Ichikawa, JP | 1 | 1997 |